Hybrid Navigation Filters Performances Between GPS, Galileo and 5G TOA Measurements in Multipath Environment

Tobie, Anne-Marie; Garcia-Pena, Axel; Thevenon, Paul; Vezinet, Jérémy; Aubault, Marion

doi:10.33012/2020.17521

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Location and telecommunication are the two key elements of the IoT [90]. As an essential part of IoT applications, pseudolites need to be integrated with communication solutions such as 5G [91,92] in order to further expand their capabilities. One existing success case is the construction of a low-cost regional navigation system [93,94] based on decommissioned communications satellites.…”

Section: An Underlying Positioning Technology For the Internet Of Thingsmentioning

confidence: 99%

Pseudolites to Support Location Services in Smart Cities: Review and Prospects

Liu,

Wang

et al. 2023

Smart Cities

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The location service is an important part of the smart city. A unified location service for outdoor and indoor/overground and underground activity will assist the construction of smart cities. However, with different coordinate systems and data formats, it is difficult to unify various positioning technologies on the same basis. Global navigation satellite system (GNSS)-based positioning is the only way to provide absolute location under the Earth-centered, Earth-fixed coordinate system (ECEF). Increasing indoor and underground human activity places significant demand on location-based services but no GNSS signals are available there. Fortunately, a type of satellite that is indoors, known as pseudolite, can transmit GNSS-like ranging signals. Users can obtain their position by receiving ranging signals and their resection without adding or switching other sensors when they go from outdoors to indoors. To complete the outreach of the GNSS indoors and underground to support the smart city, how to adapt the pseudolite design and unify coordinate frames for linking to the GNSS remain to be determined. In this regard, we provide an overview of the history of the research and application of pseudolites, the research progress from both the system side and the user side, and the plans for pseudolite-based location services in smart cities.

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Section: An Underlying Positioning Technology For the Internet Of Thingsmentioning

confidence: 99%

Pseudolites to Support Location Services in Smart Cities: Review and Prospects

Liu,

Wang

et al. 2023

Smart Cities

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“…However, in complex environments such as under trees, urban canyons, tunnels, deep mine pits, and indoors, among others, the mobile station's GNSS receiver suffers from severe multipath effects, signal fading, and fewer visible satellites, limiting the usability and application of GNSS RTK [1,2]. Given the aforementioned shortcomings, the integration of GNSS with technology such as UWB, WIFI, pseudo-satellite, IMU, 4/5G, and so on [3][4][5][6] to achieve cooperative precision positioning has become a major research hotspot in the field of navigation and positioning.…”

Section: Introductionmentioning

confidence: 99%

GNSS RTK/UWB/DBA Fusion Positioning Method and Its Performance Evaluation

et al. 2022

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As a significant space–time infrastructure, the Global Navigation Satellite System (GNSS) provides high-precision positioning, navigation, and timing (PNT) information to users all over the world. However, GNSS real-time kinematic (RTK) mobile receiver signal attenuation is obvious in complex environments such as under trees, urban canyons, and indoors, among others, and it is incapable of meeting the demand of multi-level mass users for indoor and outdoor seamless positioning applications. The goal of this study was to address the limitations and vulnerabilities of the GNSS RTK positioning above-mentioned. First, we propose a GNSS RTK/UWB/DBA fusion positioning model and provide detailed algorithm steps for various types of observations. The performance of the GNSS RTK/UWB/DBA fusion positioning under various occlusion environments is then thoroughly evaluated using static and dynamic cart experiments. The experiment results show that as the elevation mask angle increases, the number of available GNSS satellites decreases and the ambiguity resolution success rate decreases; in comparison to GNSS RTK, the proposed GNSS RTK/UWB/DBA fusion positioning model can significantly improve the spatial geometry distribution of observations, reduce the position dilution of precision (PDOP) value, and improve the ambiguity resolution success rate. At an elevation mask angle of 50 degrees, GNSS RTK/UWB/DBA combination positioning can improve the ambiguity resolution success rate by 20% to 60%, and a positioning error less than 5 cm by 20% to 50%. It also indicates that the GNSS RTK/UWB/DBA fusion positioning model has higher positioning accuracy and can effectively improve the availability and reliability of GNSS RTK in a local harsh environment.

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“…However, it also points out that their early evaluation indeed shows that the hybrid approach has the potential for optimizations, resulting in an overall increased accuracy for combined 5G and GNSS. Meanwhile, Tobie et al (2020) hybrid 5G ToA measurements deriving from 5G SS and PBCH with GNSS pseudo-range measurements, the simulation results show an improved positioning accuracy compared with standalone navigation solutions. Renaudin et al (2021) provide a general framework for the numerical computation of the Cramér-Rao Lower Bound (CRLB) for 5G ToA estimation, the simulation results using 5G Channel State Information Reference Signal (CSI-RS) show potential sub-meter positioning accuracy with 5 gNodeBs deployed.…”

mentioning

confidence: 96%

A 5G/GNSS Integrated Positioning Method

Jin¹,

Tay²,

Zhao³

et al. 2022

ION GNSS+, the International Technical Meeting of the Satellite Division of the Institute of Navigation

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Keck Voon Ling received the Ph.D. degree from the University of Oxford in 1992. His research interests include model predictive control and moving horizon estimation, their embedded implementation, and applications to fast dynamic systems. In recent years, he has been applying his research to multi-band GNSS software receivers, as well as navigation and positioning applications. He is currently an Associate Professor at

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Hybrid Navigation Filters Performances Between GPS, Galileo and 5G TOA Measurements in Multipath Environment

Cited by 5 publications

References 11 publications

Pseudolites to Support Location Services in Smart Cities: Review and Prospects

Pseudolites to Support Location Services in Smart Cities: Review and Prospects

GNSS RTK/UWB/DBA Fusion Positioning Method and Its Performance Evaluation

A 5G/GNSS Integrated Positioning Method

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